in the wake of the shooting at sandy hook elementary, gun sales are on the rise. what is driving the spike? and the growing number of teachers who are looking to arm themselves. also, one man's trash becomes a child's musical treasure. you'll meet the children's orchestra that plays instruments recycled from garbage. >> i'm harris falkner. they are actually negotiating on capitol hill just as economic analysts say we are about to go over the so-called fiscal cliff, the punishing combination of higher taxes on just about every worker in america and deep spending cuts particularly to our military. top lawmakers are calling in staff members for meetings on this saturday. right now we are told senate leaders are working on a potential deal. still our journalists on the hill are being told there will be no official proposals or votes until tomorrow at the very earliest. the time line qoo -- could not be tighter. we will begin seeing lower tax rates expiring and federal aid for things like unemployment checks. here is a statistic for you. if there is no deal in place fo